The Economics Of A Monthly Pass

Clyde Haberman wondered if a monthly NYC metro pass is worth it if you're on vacation for part of the summer. Michael Moyer actually crunched the numbers:

[A] 7-day unlimited pass only makes sense if you’re planning to take 14 or more rides a week—twice a day, weekends included. A 30-day unlimited pass works out after 12 rides a week, just in case you prefer to spend Sundays at home. To my surprise, a standard 10-ride-a-week commuter should always pay by ride.